RADIATION PHYSICS AND CHEMISTRY
·
2021
·
IF 2.858
Meng Yan,Fen Luo,Xiaoyan Shu,Hexi Tang,Shunzhang Chen,Guilin Wei,Yi Xie,Lan Wang,Xirui Lu
As it is pivotal to study the self-irradiation of radioactive contaminated soil under alpha-particle in long term storage, the purpose of this paper is to research the irradiation behavior of 10–30 wt% of Nd 2 O 3 and CeO 2 co-doped glass samples under 0.5 MeV He 2+ irradiation of high fluences from 1.0 × 10 14 to 1.0 × 10 17 ions/cm 2 at room temperature. The results of GIXRD show that the main phases keep amorphous after irradiation. Surface morphology is still smooth and enrichment phenomenon of all the referred elements exist rarely after irradiation by SEM-EDS. Meanwhile, the results of Vickers hardness value and leaching rate test show slightly change whereas the structure of the glass-samples under alpha-particle irradiation are stable. Therefore, this work can offer detailed information for the radiation tolerance of the materials.
研究领域:
材料科学
·
核废物管理
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wei Zheng,Lingyan Xu,Yingming Wang,Chongqi Liu,Lu Liang,Zhentao Qin,Lixiang Lian,Yanyan Lei,Qinzeng Hu,Wanqi Jie
Organic semiconductor single crystals with tissue-equivalent properties present promising advantages for detecting ionizing radiation, particularly X-rays. However, few organic semiconductor materials can exhibit excellent radiation detection performance. In this study, we focus on 9,10-bis(phenylethynyl)anthracene (BPEA) single crystals with two different crystalline phases (α-BPEA and β-BPEA). A slow solution evaporation method is employed to grow centimeter-sized α-BPEA and β-BPEA crystals with high quality. The sandwich-type α-BPEA detector demonstrates exceptional ionizing radiation detection capabilities, with resistivity of 2.72 × 10 12 Ω cm and hole mobility of 2.93 cm 2 V −1 s −1 . The α-BPEA detector also achieves rapid detection of 5.49 MeV α-particles with detection time of 7 ms. The energy resolution and hole mobility-lifetime product are calculated to be 29.93 % and 2.51 × 10 −5 cm 2 V −1 , respectively, marking the best α-particle energy spectrum performance among current organic semiconductor detectors. The α-BPEA detector exhibits X-ray detection sensitivity as high as 451.37 μC Gy air −1 cm −2 and detection of limit as low as 26.28 nGy air s −1 . The α-BPEA detector also demonstrates good operational stability and outstanding imaging capabilities, achieving a spatial resolution of 1.6 lp mm −1 . The BPEA single crystals suggest significant potential for direct ionizing radiation detection and broader optoelectronic applications.
研究领域:
材料科学
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辐射探测
·
有机半导体
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xin Liu,Quanchao Zhang,Dou Zhao,Ruichen Bai,Yinjie Ruan,Binbin Zhang,Fangpei Li,Menghua Zhu,Wanqi Jie,Yadong Xu
Solution-grown hybrid perovskite, FAPbBr3, has attracted great attentions recently due to its inspiring optoelectronic properties and low-cost preparation method. However, challenges of solution growth for FAPbBr3 bulk crystals remain yet, such as uncontrollable crystalline morphologies, irregular shapes, and limited crystal sizes, which are attributed to the dense crystallization nucleus. In this work, we investigate the effects of growth conditions and seed behaviors on the crystallization quality and the yield of FAPbBr3 single crystals. First, the spontaneous nucleation is tailored by optimizing the precursor concentration and heating rate. Furthermore, the seeded crystals are introduced to solve the issues related to the morphology and the yield of single crystals. Based on the above-mentioned investigations, an optimized growth method, a seeded solution method, under a heating rate of 0.1 °C/h is proposed, and centimeter-scale FAPbBr3 single crystals with a very narrow FWHM of high-resolution X-ray diffraction rocking curves and a high yield of ∼100% of single crystals are obtained. The resulting FAPbBr3 single crystal exhibits a bulk resistivity of 3.42 × 109 Ω·cm and a superior ION/IOFF ratio over 104 under 405 nm light at a bias of 10 V. Finally, the pulse height spectra with an energy resolution of ∼21.4% are also achieved based on an AZO/FAPbBr3/Au detector, illuminated using an uncollimated 241Am@5.49 MeV α-particle source at room temperature. This modified seeded solution method shows great potential in preparing high-quality and high-yield perovskite single crystals.
研究领域:
材料科学
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晶体生长
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半导体物理
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产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2018
·
IF 4.484
Xin Liu,Hongjian Zhang,Binbin Zhang,Jiangpeng Dong,Wanqi Jie,Yadong Xu
Methylammonium (MA) lead hybrid perovskite single crystal recently received attention as a potential radiation detection material. Here, we report the MAPbBr3 bulk crystals grown by the modified antisolvent vapor-assisted crystallization method. The growth rate is determined by diluting the antisolvent, which results in the average size of MAPbBr3 crystals to significantly increase from 2 × 2 × 1 to 15 × 15 × 5 mm3. The morphology evolution of MAPbBr3 crystals, which is contributed by the growth anisotropy, has been discussed according to the molar ratios of precursors and the bond theory. The resulting centimeter-sized MAPbBr3 crystals exhibit high resistivity (5.6 × 108 Ω·cm) at room temperature. The mobility–lifetime (μτ) products are measured under 241Am (5.48 MeV) α particles irradiation, with the values of 2.2 × 10–4 and 4.2 × 10–4 cm2/V for electrons and holes, respectively. Simultaneously, the electrons and holes mobility are estimated to be 24.6 and 59.7 cm2/(V·s), respectively, using the α-source-induced transient waveforms.
研究领域:
材料科学
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物理学
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产品关联
DOI
高影响因子
Crystals
·
2025
·Vol. 15
·期 8
·716
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IF 2.4
Yang Li,Xue Du,Silong Zhang,Bo Liu,Naizhe Zhao,Yapeng Zhang,Xiaoping Ouyang
Thin-film detection technology plays a significant role in particle physics, X-ray imaging and radiation monitoring. In this paper, the detection capability of a Cs3Cu2I5thin-film scintillator toward α particles is investigated. The flexible thin-film scintillator is fabricated by a facile and cost-effective in situ strategy, exhibiting excellent scintillation properties. Upon α-particle excitation, the light yield of the Cs3Cu2I5thin-film is 2400 photons/MeV, which greatly benefits its application for single-particle events detection. Moreover, it shows linear energy response within the range of 4.7–5.5 MeV and moderate decay time of 667 ns. We further explored the cryogenic scintillation performance of Cs3Cu2I5@PMMA film. As the temperature decreases from 300 K to 50 K, its light yield gradually increases to 1.3 fold of its original value, while its decay time remains almost unchanged. This scintillator film also shows excellent low-temperature stability and flexible operational stability. This work demonstrates the great potential of the Cs3Cu2I5@PMMA film for the practical utilization in α-particle detection application.
研究领域:
粒子物理
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辐射探测
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材料科学
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核工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yang Li,Liang Chen,Runlong Gao,Bo Liu,Wei Zheng,Yanming Zhu,Jinlu Ruan,Xiaoping Ouyang,Qiang Xu
The scintillator is a unique class of luminescent materials, which is of great significance in clinical diagnosis, security inspection, and radiation detection. Herein, an all-inorganic Cs4PbI6 single crystals (SCs) as a nanosecond and an efficient X-ray and α particle scintillator is described. The radioluminescence (RL) spectrum of Cs4PbI6 SCs under X-ray excitation consists of a band gap emission at 310 nm and a broadband emission at 552 nm at room temperature. Furthermore, Cs4PbI6 SCs demonstrate nanosecond decay times of 0.95 and 6.86 ns, a high sensitivity to low-energy X-ray (30 keV) with a low detection limit (187 nGyair/s), and a favorable linearity detection range, potentially enabling their broad application in X-ray imaging. Under 237Np α particle irradiation, the light yield of Cs4PbI6 SCs is about 49.5% of that of a BGO scintillator with an energy resolution of 35% at 4.78 MeV. Our results demonstrate the potential of Cs4PbI6 SCs as a nanosecond and low-cost scintillator in radiation detection applications.
研究领域:
材料科学
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辐射探测
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医学成像
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Zhang Xin,Bai Ruichen,Fu Yuhao,Hao Yingying,Peng Xinkai,Wang Jia,Ge Bangzhi,Liu Jianxi,Hu Yongcai,Ouyang Xiaoping,Jie Wanqi,Xu Yadong
α particles must be monitored to be managed as radioactive diagnostic agents or nuclear activity indicators. The new generation of perovskite detectors suffer from limited energy resolution, which affects spectroscopy and imaging applications. Here, we report that the solution-grown CsPbBr 3 crystal exhibits a low and stable dark current (34.6 nA·cm −2 at 200 V) by thinning the as-grown crystal to decrease the high concentration CsPb 2 Br 5 phase near the surface. The introduction of the Schottky electrode for the CsPbBr 3 detector further reduces the dark current and improves the high-temperature stability. An energy resolution of 6.9% is achieved with the commercial electronic system, while the effects of air scattering and absorption are investigated. Moreover, 1.1% energy resolution is recognized by a full-customized readout application-specific integrated circuit without any additional signal processing, which matches well with the given parameters of the CsPbBr 3 detector by reducing the parasitic capacitance and electronic noise.
研究领域:
材料科学
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核技术应用
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电子学
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2021
·
IF 4.126
Bin-Bin Zhang,Fangbao Wang,Xin Liu,Bao Xiao,Meng Xu,Song-Tao Dong,Yadong Xu,Paul Sellin,Wanqi Jie
Halide perovskites have been considered as nuclear radiation detection materials due to their high mobility, long carrier lifetime, and high absorption coefficient. However, it has been reported that the ion migration increases the dark current of halide perovskite detectors and hinders the stable response to high energy photons or particles. In this work, we report the utilization of the “voltage cycling” technique to obtain the stable α-particle spectra in a CsPbBr2.4Cl0.6 device. Also, by measuring the time-dependent stability and the effect of electric field strength, we can gain insight into the phenomona causing instability in these devices. Accordingly, the influence of ion migration on the charge transport properties and energy spectra in CsPbBr2.4Cl0.6 detectors was also revealed. Our investigation demonstrates the strong correlation between ion migration processes and stable energy spectra in halide perovskite materials.
研究领域:
材料科学
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核物理
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辐射探测
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Kexin Lv,Hengcheng Wan,Yi Li,Shengtai Zhang,Qiang He
The garnet structure Y 3 Fe 5 O 12 (YIG) possesses a high immobilization capacity for actinides. However, the related research on the sensitivity of garnet structures to irradiation damage is still in its infancy. Herein, we synthesize Y 3-x Nd x Fe 5 O 12 (x = 0.1, 1.8) ceramics and irradiate them with 2 MeV α-particle irradiation to fluences ranging from 1 × 10 14 to 1 × 10 17 ions/cm 2 at room temperature. We evaluated the effects of irradiation damage on the phase transition and chemical stability. An amorphous layer with a thickness of 84 nm is formed by irradiation, though the grain shape and element distribution remain uniform after irradiation. In addition, Y 3-x Nd x Fe 5 O 12 (x = 0.1, 1.8) ceramics exhibit excellent chemical stability (∼ 10 −5 g m −2 · d −1 ) in the leaching process. Restricted by the topological structure of garnet, the increase in solid solubility does not lead to a change in the radiation tolerance of the garnet structure, which means that garnet of different compositions should have similar and predictable radiation tolerance.
研究领域:
材料科学
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核科学
·
固体物理
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2020
·
IF 4.089
Peng Zhang,Qihao Sun,Yadong Xu,Xiang Li,Lin Liu,Guodong Zhang,Xutang Tao
All-inorganic perovskite CsPbBr3 has attracted intense attentions due to its inspiring optoelectronic properties and excellent stability. Growing large-size single crystals with high quality is vital both for the intrinsic property investigation and the high-performance device fabrication. Here, large-size CsPbBr3 single crystals (ϕ 30 mm × 100 mm) were grown by the modified Bridgman method. The surface morphologies of the as-grown CsPbBr3 single-crystal wafers were characterized by SEM, and inclusions with size of 1–2 μm were observed in the first-time grown crystal (labeled as CPB-1). By adopting a slower growth rate (0.2 mm/h) and cooling rate (5 °C/h) than that of CPB-1, the inclusions were eliminated in subsequent growth (labeled as CPB-2). The hole mobility-lifetime products were measured to be 3.92 × 10–3 and 1.46 × 10–2 cm2·V–1 for CPB-1 and CPB-2, respectively. The carrier mobility of CPB-2 was enhanced 1 order of magnitude from 10.1 ± 0.3 cm2·V–1·s–1 (CPB-1) to 101.3 ± 4.2 cm2·V–1·s–1 due to the elimination of inclusions. In addition, CPB-2 exhibited excellent α particles detection ability with the optimal energy resolution of 15.1% at −60 V bias. We provide an effective way to enhance the optoelectronic properties and device performance of melt-grown CsPbBr3 single crystal by preventing the formation of the inclusions.
研究领域:
材料科学
·
光电材料
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晶体生长技术
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Physics
·
2020
·
IF 2.638
Liu Xin,Fu Jinghua,Zhao Dou,Hao Yingying,Zhu Hao,Xu Meng,Zhang Binbin,Jie Wanqi,Xu Yadong
High-quality organic–inorganic halide perovskite brings an opportunity for ideal nuclear radiation detection due to its large carrier mobility, lifetime, and heavy atoms. However, the relatively low bulk resistivity restricts its development for alpha particles and X/γ-ray detectors. Here, we report on the MAPbBr3−xIx (MPB:I) perovskite crystals grown using the modified inverse temperature crystallization method. Based on the measured supersolubility and solubility curves, the heating procedure was accurately designed to control the nucleation and growth rate. The resulting MPB:I single crystals exhibit higher bulk resistivity of 1.4 × 109 Ω cm, which is 10 times that obtained from the traditional inverse temperature crystallization method. Finally, an uncollimated 0.8 μCi 241Am @5.48 MeV alpha particles source was adopted to evaluate the MPB:I single crystals at room temperature condition. The electron mobility (μe) and mobility-lifetime product (μτ)e of (264.6 ± 6.5) cm2 V−1 s−1 and (2.6 ± 0.3) × 10−3 cm2/V, respectively, were obtained.
研究领域:
材料科学
·
核物理
·
辐射探测
✓ 已验证
产品关联
DOI
高影响因子
APL Materials
·
2023
·Vol. 11
·期 10
·
IF 6.1
Wu Jie,Wang Xin,Xu Yubing,Pan Yuzhu,Chai Shunjie,Zhao Jingda,Cheng Qi,Zhao Zhiwei,Li Qing,Bae Byung Seong,Fayemi Omolola Esther,Zhou Jianming,Zhu Ying,Lei Wei
Compared with the pure lead-based MAPbBr 3 (MA = CH 3 NH 3 ) perovskite single crystals (PSCs), tin–lead alloy (MAPb x Sn 1−x Br 3 ) PSCs with higher carrier mobility and longer carrier lifetime are expected to perform as better-quality ionization radiation detectors. In this work, we design MAPbBr 3 –MAPb 0.9 Sn 0.1 Br 3 –MAPb 0.8 Sn 0.2 Br 3 structure detectors by employing solution-process epitaxial growth. Because of the gradient change in tin element proportion, the relatively low mismatch rates between different PSC layers can effectively reduce defects generated at the interface, which improves charge collection efficiency. Moreover, band barriers between different PSC layers form depletion layers due to the differences in band structure, and the high resistivity and built-in electric field of depletion layers can suppress dark current under high voltages. The optimized detector exhibits a high x-ray detection sensitivity of 6.76 × 10 4 μ C Gy −1 cm −2 and the lowest detectable dose rate of 7.4 nGy s −1 under 40 kVp x-ray radiation. Based on 241 Am (5.95 MeV) α particle irradiation, tin–lead HD has lower detection noise and more obvious response compared to MAPbBr 3 PSCs. The electron mobility was indicated as high as 612 cm 2 s −1 V −1 , and the mobility-lifetime ( μ τ) products were measured to be 3.5 × 10 −3 cm 2 V −1 using the Hecht equation, demonstrating superior transport properties.
研究领域:
材料科学
·
辐射检测
·
半导体物理
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）